<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <style>

        /* 链接的颜色 */
    a:link{

        color: red;

    }
    
        /* 已经访问的链接 */
    a:visited{
        color: blue;
    }
        /* 鼠标点击的那一刻的颜色 */
    a:active{
        color: green;
        
    }

    /* 鼠标悬停的颜色 */
    a:hover{
        color: pink;
        font-size: 50px;
    }
    </style>
    <title>Document</title>
</head>
<body>
    <a href="http://www.jindong.com">京东</a>
</body>
</html>